diff --git a/src/connection/connection.js b/src/connection/connection.js
index 205b2dc..c393bf0 100644
--- a/src/connection/connection.js
+++ b/src/connection/connection.js
@@ -75,7 +75,7 @@ export type ConnectionArguments = {
   ...
 };
 
-type ConnectionConfig = {
+export type ConnectionConfig = {
   name?: string,
   nodeType: GraphQLNamedOutputType | GraphQLNonNull<GraphQLNamedOutputType>,
   resolveNode?: GraphQLFieldResolver<any, any>,
@@ -84,7 +84,7 @@ type ConnectionConfig = {
   connectionFields?: Thunk<GraphQLFieldConfigMap<any, any>>,
 };
 
-type GraphQLConnectionDefinitions = {
+export type GraphQLConnectionDefinitions = {
   edgeType: GraphQLObjectType,
   connectionType: GraphQLObjectType,
 };
diff --git a/src/index.d.ts b/src/index.d.ts
index 3dd223b..9be6bcc 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -3,6 +3,8 @@ export type {
   Connection,
   ConnectionArguments,
   ConnectionCursor,
+  ConnectionConfig,
+  GraphQLConnectionDefinitions,
   Edge,
   PageInfo,
 } from './connection/connection';
diff --git a/src/index.js b/src/index.js
index 3dd223b..9be6bcc 100644
--- a/src/index.js
+++ b/src/index.js
@@ -3,6 +3,8 @@ export type {
   Connection,
   ConnectionArguments,
   ConnectionCursor,
+  ConnectionConfig,
+  GraphQLConnectionDefinitions,
   Edge,
   PageInfo,
 } from './connection/connection';